Business Statistics And Research Methods - Study Mode

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[#11] Arrange the following steps in sequence for calculation of test of significance for large sample. 1. State the null hypothesis. 2. Compute the statistic. 3. Determine the level of significance. 4. Compute the critical value by testing the value of 'Z'. 5. Compare the value of test statistic 2 with the critical value to arrive at a decision.

(A) 1, 2, 3, 4, 5

(B) 2, 3, 4, 5, 1

(C) 1, 3, 2, 4, 5

(D) 5, 4, 3, 2, 1

Correct Answer

(A) 1, 2, 3, 4, 5

[#12] Which of the following statements is correct about a parameter and a statistic associated with repeatedrandom samples of the same size from the same population?

(A) Values of a parameter will vary from sample to sample but values of a statistic will not

(B) Values of both a parameter and a statistic may vary from sample to sample

(C) Values of a parameter will vary according to the sampling distribution for that parameter

(D) Values of a statistic will vary according to the sampling distribution for that statistic

Correct Answer

(D) Values of a statistic will vary according to the sampling distribution for that statistic

[#13] In which of the following sampling methods are the "n" individuals subdivided into separate subpopulations with a common characteristic?

(A) Stratified sample

(B) Systematic sample

(C) Cluster sample

(D) None of the above

Correct Answer

(A) Stratified sample

[#14] Select the methods of finding out correlation from the following: (i) Karl Pearson's Method (ii) Spearman's Rank Method (iii) Yule's Method (iv) Coefficient of Contingency (v) Concurrent Deviation Method

(A) (i), (ii), (iii)

(B) (i) (ii), (iii), (iv)

(C) (i), (ii), (v)

(D) (iii), (iv), (v)

Correct Answer

(C) (i), (ii), (v)

[#15] The mean and standard deviation of 10 observations are 35 and 2 respectively. List-I List-II a. Changed mean if each observation is increased by 4 1. 39 b. Standard deviation if each observation is increased by 4 2. 2 c. Changed mean if each observation is multiplied by 5 3. 175 d. Changed standard deviation if each observation is multiplied by 5 4. 10

(A) a-1, b-2, c-3, d-4

(B) a-2, b-1, c-3, d-4

(C) a-3, b-2, c-4, d-1

(D) a-4, b-3, c-2, d-1

Correct Answer

(A) a-1, b-2, c-3, d-4